Digital Humidity Controller Switch 0–99% RH – Greenhouse

Precise Humidity Control for Greenhouses, Labs & More

Take full command of your environment with this Digital Humidity Controller Switch. Designed for home growers, greenhouse operators, laboratory technicians, and small business owners, this compact controller continuously monitors ambient humidity and automatically activates connected devices — humidifiers, dehumidifiers, fans, or vents — to keep conditions exactly where you need them.

With a wide measurement range of 0–99% RH and an impressive accuracy of ±0.1% RH, this hygrometer switch ensures your plants, stored goods, or sensitive equipment always exist in the ideal environment. The user-friendly interface makes setting your target humidity level quick and straightforward, even for first-time users.

Made in Mainland China.

Key Features

• Wide Humidity Range: Monitors and controls from 0% to 99% RH, suitable for virtually any application
• High Accuracy: ±0.1% RH control accuracy for dependable, consistent results
• Flexible Input Voltage: Compatible with 12V, 24V, and 110–220V power sources for versatile installation
• Generous Load Capacity: Supports up to 120W (12V/24V) or 1500W (110–220V) connected loads
• Compact & Durable: Sturdy plastic housing measuring approximately 60 × 45 × 31 mm — easy to mount in tight spaces
• Direct Output Control: Plug-and-play relay output instantly switches your connected device on or off at your set threshold
• Versatile Applications: Ideal for greenhouses, warehouses, wine cellars, drying rooms, reptile enclosures, and laboratories

Specifications

Package Contents

• 1 × Digital Humidity Controller Switch

Note: Please allow ±1–2 cm variance due to manual measurement. Colors may vary slightly from screen to screen.

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Frequently Asked Questions

Q: What devices can I control with this humidity controller switch?

A: This digital humidity controller switch can operate any device that falls within its load capacity — including humidifiers, dehumidifiers, exhaust fans, ventilation systems, or foggers. Simply plug the device into the controller's output and set your desired humidity threshold.

Q: Is this humidity controller compatible with standard household voltage?

A: Yes. The controller supports input voltages of 12V, 24V, and 110–220V AC, making it compatible with both standard US household outlets (110V) and international voltages (220V), as well as low-voltage DC setups commonly used in greenhouse automation systems.

Q: How do I set the target humidity level on this hygrometer controller?

A: The unit features a user-friendly interface with clearly labeled controls. You simply use the onboard buttons to dial in your desired humidity setpoint. The controller will automatically switch your connected device on or off as the ambient humidity rises above or drops below your chosen level.

Q: Can this humidity switch be used in a reptile enclosure or wine cellar?

A: Absolutely. The 0–99% RH operating range and compact form factor make this controller well-suited for reptile terrariums, wine cellars, drying rooms, cigar humidors, mushroom growing chambers, and any other humidity-sensitive environment requiring automated control.

Production & Packaging Notice

To maintain high stock availability and fast shipping times, our items are sourced from multiple verified manufacturing facilities. While the core quality, materials, and product specifications remain identical, you may notice slight variations in the packaging design, manufacturing origin, or the wording of the printed instructions.